LEARN · PRACTISE · DISCOVER

Use a Number Line

Read at your own pace. Try the practice, then continue your course.

Move right to add and left to subtract on a number line, using one clear hop for each count.

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THE CURIOSI · EXPLORE & TRY

Explore the picture together. Open each numbered card for a little help.

Look at each counter or step. Open the explanations to connect the picture and the equation.

1Start on 8

Put your finger on eight before counting any hops.

2Make four hops right

The four hops land on 9, 10, 11 and 12.

3Land on 12

8 + 4 = 12. For subtraction of a positive amount, hop left instead.

Count carefully and explain your steps. Use objects or fingers whenever they help.

Show the landing number for 8 + 4. Tap a box to add a counter; tap it again to remove it. Each frame holds ten.

0 counters selected.

Choose one answer for each question, then check. Practice results stay on this page and do not change course completion.

1. Starting on 8, the first hop right lands on… 7 9 8

2. 15 − 3 = 12 18 11

3. For 7 + 5, how many one-step hops do you make? 7 12 5

Read the answer explanations

Ask an adult to read the instructions with you. Use large safe counters or drawings; take a break whenever you need one.